Feature/globals (#690)

* Move global objects out of OpenSpaceEngine
 * General cleanup of main.cpp
 * Add default_joystick asset to all scenes
 * No longer suppress mouse interaction on slave nodes
 * Window delegate uses function pointers rather than subclassing
 * Fix for false overwriting of ImGUI configuration file
 * Change default color and tilt angle of fisheye rendering
 * Restructured performance manager
 * Simplify screenshot handling

include/openspace/rendering/abufferrenderer.h

@@ -76,8 +76,7 @@ public:
     void postRaycast(const RaycasterTask& raycasterTask);
 
     void update() override;
-    void render(Scene* scene, Camera* camera, float blackoutFactor,
-        bool doPerformanceMeasurements) override;
+    void render(Scene* scene, Camera* camera, float blackoutFactor) override;
 
     /**
      * Update render data

include/openspace/rendering/dashboard.h

@@ -41,6 +41,7 @@ class DashboardItem;
 class Dashboard : public properties::PropertyOwner {
 public:
     Dashboard();
+    ~Dashboard();
 
     void render(glm::vec2& penPosition);
 

include/openspace/rendering/framebufferrenderer.h

@@ -92,8 +92,7 @@ public:
     void update() override;
     void performRaycasterTasks(const std::vector<RaycasterTask>& tasks);
     void performDeferredTasks(const std::vector<DeferredcasterTask>& tasks);
-    void render(Scene* scene, Camera* camera, float blackoutFactor,
-        bool doPerformanceMeasurements) override;
+    void render(Scene* scene, Camera* camera, float blackoutFactor) override;
 
     /**
      * Update render data

include/openspace/rendering/renderengine.h

@@ -42,7 +42,6 @@ namespace ghoul::opengl { class ProgramObject; }
 
 namespace openspace {
 
-namespace performance { class PerformanceManager; }
 namespace scripting { struct LuaLibrary; }
 
 class Camera;
@@ -70,7 +69,6 @@ public:
 
     void initialize();
     void initializeGL();
-    void deinitialize();
     void deinitializeGL();
 
     void setScene(Scene* scene);
@@ -79,9 +77,6 @@ public:
 
     const Renderer& renderer() const;
     RendererImplementation rendererImplementation() const;
-    RaycasterManager& raycasterManager();
-    DeferredcasterManager& deferredcasterManager();
-
 
     void updateShaderPrograms();
     void updateFade();
@@ -96,10 +91,6 @@ public:
     void renderEndscreen();
     void postDraw();
 
-    // Performance measurements
-    bool doesPerformanceMeasurements() const;
-    std::shared_ptr<performance::PerformanceManager> performanceManager();
-
     float globalBlackOutFactor();
     void setGlobalBlackOutFactor(float opacity);
 
@@ -161,8 +152,6 @@ public:
     glm::ivec2 renderingResolution() const;
     glm::ivec2 fontResolution() const;
 
-    properties::PropertyOwner& screenSpaceOwner();
-
 private:
     void setRenderer(std::unique_ptr<Renderer> renderer);
     RendererImplementation rendererFromString(const std::string& renderingMethod) const;
@@ -173,14 +162,10 @@ private:
     void renderShutdownInformation(float timer, float fullTime);
     void renderDashboard();
 
-
     Camera* _camera = nullptr;
     Scene* _scene = nullptr;
-    std::unique_ptr<RaycasterManager> _raycasterManager;
-    std::unique_ptr<DeferredcasterManager> _deferredcasterManager;
 
     properties::BoolProperty _doPerformanceMeasurements;
-    std::shared_ptr<performance::PerformanceManager> _performanceManager;
 
     std::unique_ptr<Renderer> _renderer;
     RendererImplementation _rendererImplementation = RendererImplementation::Invalid;
@@ -212,8 +197,6 @@ private:
     uint64_t _frameNumber = 0;
 
     std::vector<ghoul::opengl::ProgramObject*> _programs;
-    properties::PropertyOwner _screenSpaceOwner;
-    std::vector<std::unique_ptr<ScreenSpaceRenderable>> _screenSpaceRenderables;
 
     std::shared_ptr<ghoul::fontrendering::Font> _fontBig;
     std::shared_ptr<ghoul::fontrendering::Font> _fontInfo;

include/openspace/rendering/renderer.h

@@ -71,8 +71,7 @@ public:
 
     virtual void update() = 0;
 
-    virtual void render(Scene* scene, Camera* camera, float blackoutFactor,
-        bool doPerformanceMeasurements) = 0;
+    virtual void render(Scene* scene, Camera* camera, float blackoutFactor) = 0;
     /**
      * Update render data
      * Responsible for calling renderEngine::setRenderData